Since the biggest weakness of the pre-1898 style SR military Mausers is their gas handling, they are among the actions that I'd least like to have a case separation with.
In a bow to safety, I think that if I was in your shoes I'd opt for a $330 Howa 1500 from Whittaker's in lieu of a putting more $$ into a potential money pit.
The sensible solution. By the time you re-cut the lug recesses, lap them, have the action heat treated, set the barrel back a thread, face the barrel and chamber to depth you're easily going to be into $200 in machine work and you'll still have a sloppy military barrel and clunky military action.
